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Hamamatsu Corp. - Earth Innovations LB 2/24

Chemical Sensor Offers Sensitive Real-Time Solution

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Aaron J. Hand

A sensor developed at the Georgia Tech Research Institute could make detection of chemical contaminants highly portable and sensitive, and also enable in situ monitoring of a range of chemicals. It is a planar optical waveguide chip with 13 interferometric sensors built onto it. Each interferometer acts as a sensor channel, containing a chemically selective film that reacts to refractive index changes. "The problem in the past has been developing something sensitive enough to detect the chemicals," said Nile Hartman, principal research engineer at the institute's Electro-Optics, Environment...Read full article

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    Published: February 1999
    Basic SciencechemicalsResearch & TechnologySensors & DetectorsTech Pulse

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